The invention relates to a method (100) for switching between desired value filters (26, 28) of a drive means (52) for a machine axis (10, 12) during operation. An input signal (20) is applied to the first and to the second desired value filter (26, 28) for producing a first and a second output signal (23, 33). Then any deviation between the first and the second output signal (23, 33) is determined. If the deviation falls below a threshold value, the first desired value filter (26) is separated from the drive means (52) and substantially simultaneously the second desired value filter (28) is connected to the drive means (52). The desired value filters (26, 28) have different running times (19).

A system may include control circuitry for detecting a plosive event associated with a microphone transducer and in response to the plosive event, causing restoration of acoustic sense operation of the microphone transducer and a processing circuit associated with the microphone transducer. A system for configuring a filter having at least two frequency response configurations to achieve an effective frequency response configuration intermediate to the at least two frequency response configurations may include control circuitry for rapidly switching between the at least two frequency response configurations such that a weighted average frequency response of the filter corresponds to the effective frequency response configuration.

A system may include control circuitry for detecting a plosive event associated with a microphone transducer and in response to the plosive event, causing restoration of acoustic sense operation of the microphone transducer and a processing circuit associated with the microphone transducer. A system for configuring a filter having at least two frequency response configurations to achieve an effective frequency response configuration intermediate to the at least two frequency response configurations may include control circuitry for rapidly switching between the at least two frequency response configurations such that a weighted average frequency response of the filter corresponds to the effective frequency response configuration.

A method and device are provided for filtering digital audio signals using at least one ARMA filter, particularly during a filter change. The method includes the following steps: a step of receiving a first request to change filtering to or from filtering by a first ARMA filter; and, in response to the first request, a step of gradually switching, at each of a plurality of cascaded first filtering blocks, between digital-signal filtering by a first basic filtering cell and digital-signal filtering by another associated basic filtering cell, the first basic filtering cells of the plurality of first filtering blocks factorizing the first filter.

A digital microphone includes an analog-to-digital converter (ADC) and a digital filter system coupled to the ADC, wherein the digital filter system switches between a standard IIR filter architecture and a polyphase IIR filter architecture.

A system and method for an In-Band Rejection Filter (IBR) to filter varying combination of subchannels within a frequency band is provided. A bitmap configuration that specifies active subchannels within the frequency band can be used to determined filter coefficients for the IBR filter to reject interference from inactive subchannels while allowing signals from active subchannels to pass through.

The disclosure relates to stereo or multi-channel audio system configured to process an audio signal including one or more paired two side specific audio channels, which involve FIR filters, for which the coefficients may need to be replaced during the normal operation with the aim of not introducing unpleasant audio effects, distortions or noises. Each side specific audio channel in the pair includes also two side specific mixing units, and two morphing units. Each side specific mixing unit is configured to receive as input the two side specific audio channels of the pair and to output a mixed output signal mixed on the basis of the two side specific audio channels, each side specific FIR filter is configured to receive as input the mixed output signal of the side specific mixing unit of the corresponding side, and to output a side specific filtered signal.